1. Open up Microsoft Paint and crop or select the part on a picture you want resized.

2. Right click and select "Resize/Skew".

3. On the window that pops up, type in a % that you want to resize your picture to in the "Resize" section. Do this number in BOTH boxes, or else it will come out stretched. For example, i wanted to resize my picture to 50% of its size.